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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






2. Larger the cow - more milk is produced; smaller the cow - less milk is produced






3. Look for infection - split - and rupture of the penis






4. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






5. Prevent the cow from getting an infection from the calve






6. Failure to have both testis (gonads) descend






7. Implies the amount of estrogen production






8. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






9. 26 hours after estrus begins






10. (switzerland) 2nd in size and milk production - most muscle -






11. Not under a timeline - cow can not be sold as steak






12. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






13. What about the sperm for a bull which has been castrated but still has testicles?






14. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






15. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






16. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






17. Parturition is controlled by...






18. Birthing process (termination of gestation)






19. 4-6 days






20. Not under a timeline - cow can not be sold as steak






21. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






22. 1-2 days






23. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






24. Milk is 15% ________ and 85% __________.






25. 19-23 (21) days






26. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






27. ~305 days (altough often longer due to breeding difficulties)






28. Produce testosterone. located between the seminiferous tubules






29. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






30. 45-60 days after breeding; re-breed as required






31. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






32. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






33. Microscopic - make sure not sterile - very few bulls are actually tested






34. Front feet and head first. (except for hogs and dogs)






35. (LH) causes female's egg to break (her period)






36. Prevent the cow from getting an infection from the calve






37. Days which have decreasing daylight hours


38. Depository for semen during insemination. where urine leaves the body






39. Animals which have many estrous periods per year (ex: cow - sow)






40. 336 days






41. Animal which has been castrated after puberty






42. 2 month growth cycle. stored in the epididymis of the bull






43. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






44. When are dairy cattle dehorned?






45. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






46. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






47. 283 days






48. Why Dairy calves are fed powdered milk.






49. 45-60 days after breeding; re-breed as required






50. 19-23 (21) days